callback.h

// Copyright (c) 2009-2025 Avanquest Software. All rights reserved.
 
#ifndef PDFSDK_CXX_CALLBACK_H_INCLUDED_
#define PDFSDK_CXX_CALLBACK_H_INCLUDED_
 
#include <cstring>
#include <string>
#include <utility>
 
#include <pdfsdk/core.h>
#include <pdfsdk/cxx/exception.h>
 
#define PDFSDK_CALLBACK_BEGIN \
    try {                     \
        PDSetErrMessage("");
 
#define PDFSDK_CALLBACK_END                    \
    }                                          \
    catch (PDF::Exception & ex) {              \
        PDSetErrMessage(ex.GetErrorMessage()); \
        return ex.GetErrorCode();              \
    }                                          \
    catch (std::exception & ex) {              \
        PDSetErrMessage(ex.what());            \
        return kPDErrInternalError;            \
    }                                          \
    catch (...) {                              \
        PDSetErrMessage("Unknown error");      \
        return kPDErrInternalError;            \
    }
 
namespace PDF {
 
template<class ElemT>
inline PDErrCode CopyDataToBuffer(const ElemT* data,
                                  size_t size,
                                  void* buffer,
                                  size_t bufsize,
                                  size_t* pSize) {
    if (pSize)
        *pSize = size;
 
    if (bufsize < size)
        return kPDErrBufferTooSmall;
 
    if (buffer && size > 0)
        std::memcpy(buffer, data, size * sizeof(ElemT));
    return kPDErrSuccess;
}
 
template<class ContT>
inline PDErrCode CopyDataToBuffer(const ContT& cont, void* buffer, size_t bufsize, size_t* pSize) {
    return CopyDataToBuffer(std::data(cont), std::size(cont), buffer, bufsize, pSize);
}
 
}  // namespace PDF
 
#endif  // PDFSDK_CXX_CALLBACK_H_INCLUDED_